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Barium Sulfate precipitated from a 1.300 sample was contaminated with 9.4 mg of Fe2(SO4)3 and weighed a total of 314.0 mg. Calculate the apparent % BaSO4 and True % BaSO4

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Apparent % BaSO4 = (314.0 - 9.4) / 1.300 x 100 = 24.15%

True % BaSO4 = (314.0 - 9.4) / (1.300 + 9.4) x 100 = 24.02%

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